A QUASAR signal model is proposed which combines quadratic polynomial-phase sinusoids and a residual for music analysis and synthesis. This signal model and the corresponding model parameter estimation schemes have some advantages over previously proposed ones in terms of memory use (data reduction), computational complexity, and synthesis quality. In contrast to the conventional time-frequency analysis approach, that is, obtaining -time-localized- model parameters on a frame-by-frame basis and with an energy fitting criterion, an estimation procedure is presented to obtain -globally optimized- model parameters with a global waveform fitting criterion. Different from the existing approach to the synthesis of the residual where a noise-driven source filter model is used, it is proposed to use LPC-based waveform coders for the synthesis of the residual. Results of synthesizing some popular musical instrument sounds are presented.
Authors:
Ding, Yinong; Qian, Xiaoshu
Affiliations:
DSP Research & Development Center, Texas Instruments, Inc., Dallas, TX ; Department of Electrical Engineering, University of Rhode Island, Kingston, RI(See document for exact affiliation information.)
JAES Volume 45 Issue 7/8 pp. 571-584; July 1997
Publication Date:
July 1, 1997
Click to purchase paper as a non-member or you can login as an AES member to see more options.
No AES members have commented on this paper yet.
To be notified of new comments on this paper you can subscribe to this RSS feed. Forum users should login to see additional options.
If you are not yet an AES member and have something important to say about this paper then we urge you to join the AES today and make your voice heard. You can join online today by clicking here.